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Numerical investigations of edge plasma flows in the Tore Supra tokamak

机译：Tore Supra托卡马克中边缘等离子体流动的数值研究

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The 2D boundary layer code TECXY has been used to simulate edge plasma parameters in the Tore Supra tokamak. Experimental situations have been analysed when the plasma contact point is shifted to different poloidal positions ( limiter at bottom, top, outboard and inboard midplane) as well as the edge plasma conditions during lower hybrid RF power scan experiments. With the results of the calculations it was possible to reproduce experimentally observed changes to the. ow pattern in the scrape-off-layer ( SOL) for different plasma positions. These changes can be associated with the dependence of the radial electric field and the corresponding E x B drift velocity on the limiter position as well as to the poloidal asymmetries of the input particle flux. However, the code results with 'standard radial transport' did not show the large changes to the SOL widths as observed in the experiment. In order to reproduce in the calculations the observed differences in the SOL width, it was necessary to assume strong convective (or diffusive) radial plasma. ow localized at the outboard midplane.
机译：二维边界层代码TECXY已用于模拟Tore Supra托卡马克中的边缘等离子体参数。在较低的混合RF功率扫描实验中，当等离子体接触点移动到不同的极点位置（底部，顶部，外侧和内侧中平面的限制器）以及边缘等离子体条件时，已经分析了实验情况。通过计算结果，可以重现实验观察到的变化。不同等离子体位置的刮除层（SOL）中的流型。这些变化可能与径向电场和相应的E x B漂移速度对限制器位置的依赖性以及输入粒子通量的极向不对称性有关。但是，“标准径向传输”的代码结果并未显示出在实验中观察到的SOL宽度的较大变化。为了在计算中重现所观察到的SOL宽度差异，必须假定强对流（或扩散）径向等离子体。 ow定位在舷外中平面。

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